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BEGIN:VEVENT
DTSTART;TZID=Atlantic/Canary:20130619T103000
DTEND;TZID=Atlantic/Canary:20130619T113000
UID:iactalks-507
X-WR-CALNAME: IAC Talks: Open Astronomy Seminars
X-ORIGINAL-URL: /iactalks/Talks/view/507
CREATED:2013-06-19T10:30:00+01:00
X-WR-CALDESC: IAC Talks upcomming talks
SUMMARY:The Life Cycle of Matter in the Magellanic Clouds: Insights from Sp
 itzer and Herschel 
DESCRIPTION:The Life Cycle of Matter in the Magellanic Clouds: Insights fro
 m Spitzer and Herschel \nDr. Margaret Meixner\n\nThe life cycle of baryoni
 c matter in a galaxy is driven by the exchange of material between the int
 erstellar medium (ISM) and stars, which are the agents of galaxy evolution
 . Dust is present at these key transition phases of matter: in the ISM, in
  the circumstellar environments of newly forming stars and in stellar ejec
 ta of dying stars. The Spitzer and Herschel wavelengths provide a sensitiv
 e probe of circumstellar and interstellar dust and hence, allows us to stu
 dy the physical processes of the ISM, the formation of new stars and the i
 njection of mass by evolved stars and their relationships on a galaxy-wide
  scale. Due to their proximity, well constrained viewing angle, multi-wave
 length information, and measured tidal interactions with the Milky Way (MW
 ), the Large Magellanic Cloud (LMC) and Small Magellanic Cloud (SMC) are u
 niquely suited for surveying the agents of galaxy evolution (SAGE), the IS
 M and stars.  In this talk, I will present some key results from the Spitz
 er SAGE and Herschel HERITAGE surveys including measurements of ISM mass e
 stimates from dust emission, discoveries of thousands of young stellar obj
 ect candidates, and precise measurements of dust mass loss rates from enti
 re populations of evolved stars and w the mass budgets of these galaxies. 
 I will end with a brief forward look to the future prospects with the Jame
 s Webb Space Telescope Mission.
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